Melanie Oudin

Melanie Oudin, the feisty teenager from Marietta, Ga., has vaulted into the quarterfinals at the U.S. Open, dispatching elite Russians Maria Sharapova, Elena Dementieva, and Nadia Petrova along the way. VIEW OUR GALLERY of Oudin's victories.

Paul J. Bereswill / AP Photo

Paul J. Bereswill / AP Photo

Seventeen-year-old Melanie Oudin of Marietta, Ga., serves to Anastasia Pavlyuchenkova of Russia during the first round of the U.S. Open on Sept. 1.

Timothy A. Clary, AFP / Getty Images

Oudin cheers after defeating the No. 4 seed, Elena Dementieva of Russia, during their second-round U.S. Open match on Sept. 3.

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Oudin serves to former U.S. Open champion Maria Sharapova of Russia, the No. 29 seed, on Sept. 5.

Paul J. Bereswill / AP Photo

Oudin reacts during her match against Sharapova.

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Oudin returns a shot to Sharapova.

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Oudin celebrates match point against Sharapova.

Paul J. Bereswill / AP Photo

Oudin, left, shakes hands with Sharapova after winning 3-6, 6-4, 7-5.

Timothy A. Clary, AFP / Getty Images

Oudin during her match with the No. 13 seed, Nadia Petrova of Russia, on Sept. 7.

Kathy Willens / AP Photo

Oudin returns to Petrova.

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Oudin reacts to a point against Petrova.

Amy Sancetta / AP Photo

Leslie Oudin, bottom left, mother of Melanie Oudin, and sister Katherine, right, weep in the player's family and friends box after Oudin's 1-6, 7-6(2), 6-3 upset victory over Petrova.

Chris McGrath / Getty Images

Oudin celebrates match point against Petrova. The win puts her in the quarterfinals.